This planet is hot because of the Greenhouse Effect.
What is Venus?
100
A small, rocky object that orbits the sun, usually in a band between the orbits of Mars and Jupiter.
What is a Asteoroid?
100
The highley dense planets nearest the sun; Mercury, Venus, Mars, and Earth.
What is Terrestrial Planets?
200
The planet that is tilted.
What is Uranus?
200
The Earth's Period of Revolution?
What is 365 days?
200
Number of planets in our Solar System.
What is 8?
200
A relatively small, rocky, body that travels through space.
What is Meteoroid?
200
The clockwise spin of a planet or moon as seen from above the planet's North Pole.
What is Retrograde Rotation?
300
The largest planet in our solar system.
What is Jupiter?
300
The reason water on Earth is usable.
What is the temperature of Earth is cool enogh to keep the water from boiling and hot enough to keep the water from freezing?
300
Mars is this type of planet.
What is Terrestrial Planet?
300
A Bright streak of light that results when a meteoroid burns up in the Earth's atmosphere.
What is Meteor?
300
The amount of time it takes an object to revolve around the sun.
What is Period of Revolution?
400
The planet with a retrograde rotation.
What is Venus?
400
The reason there cannot be water on Mercury.
What is the surface temperature is too hot?
400
Neptune is this type of planet.
What is Gas Giant?
400
A small body of ice, rock, and cosmic dust that follows an elliptical orbit around the sun and that gives off gas and dust in the form of a tail as it passes close to the sun.
What is Comet?
400
A planet that has a deep massive atmosphere, such as Jupiter, Saturn, Uranus, or Neptune.
What is Gas Giant?
500
The planet with the prograde rotation.
What is Earth?
500
This is the reason astronomers think there may have been water on Mars in past.
What is some of the walls of Martian craters look like they were made by the flow of mud which suggests there used to be a lake or river there?
500
A meteoroid that reaches the Earth's surface without burning up completely.
What is a Meteorite?
500
The amount of time it takes an object to rotate of its axis.